exhaust too short

[JDMB18civic]

i've got a 93 civic with a b18 in it, and when i put on my headers my exhaust was a few inches short, is that normal? and what should i do to fix that?

 

[obd1kenobi]

You're going to have to take it to a muffler shop to get extended

 

[JDMB18civic]

but the stock one was long enough

 

[obd1kenobi]

really, what kinda exhaust is it?

 

[JDMB18civic]

its a dc 4-1 header, with a apexi exhaust

 

[obd1kenobi]

are you running a Cat, at about how short is it?

 

[JDMB18civic]

yea, but its gutted, and its like 4in short

 

[obd1kenobi]

Last question, what model is your hatch, and was the stock cat on the exhaust manifold? And what model civic is the Apexi for?

 

[JDMB18civic]

i got a 93 dx (hatch back), idk, and idk, cuz my car came with all of that on it

 

[JDMB18civic]

i think that it was stock

 

[obd1kenobi]

i got a 93 dx (hatch back), idk, and idk, cuz my car came with all of that on it

lol, the Exhaust manifolds are diffenet in some of the civic models if the Cat was on the manifold, that being so if the apexi is for a EX or SI then it would be shorter!

 

[teg9five]

my exhaust is short too. id say buy a new cat thats longer or take your stock one and have the flange cut off one end and have a 4 inch pipe welded to it and then weld the flange back on. this way youre not bitching up your aftermarket exhaust by cutting and welding it.

or you could just have a 4 inch pipe with 2 flanges welded on each end and bolt in on inbetween wherever seems best depending on the bends in the pipe you already have and the clearance of them. but if it were me i wouldnt. because then its just more places for your exhaust to leak. plus with 2 flanges so close together it might be hard to bolt it on.

 

[JDMB18civic]

lol, the Exhaust manifolds are diffenet in some of the civic models if the Cat was on the manifold, that being so if the apexi is for a EX or SI then it would be shorter!

it wasnt on the manifold... at least i dont think it was

 

[JDMB18civic]

my exhaust is short too. id say buy a new cat thats longer or take your stock one and have the flange cut off one end and have a 4 inch pipe welded to it and then weld the flange back on. this way youre not bitching up your aftermarket exhaust by cutting and welding it.

or you could just have a 4 inch pipe with 2 flanges welded on each end and bolt in on inbetween wherever seems best depending on the bends in the pipe you already have and the clearance of them. but if it were me i wouldnt. because then its just more places for your exhaust to leak. plus with 2 flanges so close together it might be hard to bolt it on.

i wanted to get a highflow cat neways lol

 

[teg9five]

thats your best bet then. just take some measurments. unbolt it and move the exhaust to where it needs to be and then measure from the header to the cat back and then try to find a cat to fit as close as possible. obviously